path: root/libavcodec/dxva2_h264.c (plain)
blob: 59fa5e376921e45132a7cd5b2b7c6082350bfce1

1	/*
2	* DXVA2 H.264 HW acceleration.
3	*
4	* copyright (c) 2009 Laurent Aimar
5	*
6	* This file is part of FFmpeg.
7	*
8	* FFmpeg is free software; you can redistribute it and/or
9	* modify it under the terms of the GNU Lesser General Public
10	* License as published by the Free Software Foundation; either
11	* version 2.1 of the License, or (at your option) any later version.
12	*
13	* FFmpeg is distributed in the hope that it will be useful,
14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16	* Lesser General Public License for more details.
17	*
18	* You should have received a copy of the GNU Lesser General Public
19	* License along with FFmpeg; if not, write to the Free Software
20	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21	*/
22
23	#include "libavutil/avassert.h"
24
25	#include "h264dec.h"
26	#include "h264data.h"
27	#include "h264_ps.h"
28	#include "mpegutils.h"
29
30	// The headers above may include w32threads.h, which uses the original
31	// _WIN32_WINNT define, while dxva2_internal.h redefines it to target a
32	// potentially newer version.
33	#include "dxva2_internal.h"
34
35	struct dxva2_picture_context {
36	DXVA_PicParams_H264 pp;
37	DXVA_Qmatrix_H264 qm;
38	unsigned slice_count;
39	DXVA_Slice_H264_Short slice_short[MAX_SLICES];
40	DXVA_Slice_H264_Long slice_long[MAX_SLICES];
41	const uint8_t *bitstream;
42	unsigned bitstream_size;
43	};
44
45	static void fill_picture_entry(DXVA_PicEntry_H264 *pic,
46	unsigned index, unsigned flag)
47	{
48	assert((index&0x7f) == index && (flag&0x01) == flag);
49	pic->bPicEntry = index | (flag << 7);
50	}
51
52	static void fill_picture_parameters(const AVCodecContext *avctx, AVDXVAContext *ctx, const H264Context *h,
53	DXVA_PicParams_H264 *pp)
54	{
55	const H264Picture *current_picture = h->cur_pic_ptr;
56	const SPS *sps = h->ps.sps;
57	const PPS *pps = h->ps.pps;
58	int i, j;
59
60	memset(pp, 0, sizeof(*pp));
61	/* Configure current picture */
62	fill_picture_entry(&pp->CurrPic,
63	ff_dxva2_get_surface_index(avctx, ctx, current_picture->f),
64	h->picture_structure == PICT_BOTTOM_FIELD);
65	/* Configure the set of references */
66	pp->UsedForReferenceFlags = 0;
67	pp->NonExistingFrameFlags = 0;
68	for (i = 0, j = 0; i < FF_ARRAY_ELEMS(pp->RefFrameList); i++) {
69	const H264Picture *r;
70	if (j < h->short_ref_count) {
71	r = h->short_ref[j++];
72	} else {
73	r = NULL;
74	while (!r && j < h->short_ref_count + 16)
75	r = h->long_ref[j++ - h->short_ref_count];
76	}
77	if (r) {
78	fill_picture_entry(&pp->RefFrameList[i],
79	ff_dxva2_get_surface_index(avctx, ctx, r->f),
80	r->long_ref != 0);
81
82	if ((r->reference & PICT_TOP_FIELD) && r->field_poc[0] != INT_MAX)
83	pp->FieldOrderCntList[i][0] = r->field_poc[0];
84	if ((r->reference & PICT_BOTTOM_FIELD) && r->field_poc[1] != INT_MAX)
85	pp->FieldOrderCntList[i][1] = r->field_poc[1];
86
87	pp->FrameNumList[i] = r->long_ref ? r->pic_id : r->frame_num;
88	if (r->reference & PICT_TOP_FIELD)
89	pp->UsedForReferenceFlags |= 1 << (2*i + 0);
90	if (r->reference & PICT_BOTTOM_FIELD)
91	pp->UsedForReferenceFlags |= 1 << (2*i + 1);
92	} else {
93	pp->RefFrameList[i].bPicEntry = 0xff;
94	pp->FieldOrderCntList[i][0] = 0;
95	pp->FieldOrderCntList[i][1] = 0;
96	pp->FrameNumList[i] = 0;
97	}
98	}
99
100	pp->wFrameWidthInMbsMinus1 = h->mb_width - 1;
101	pp->wFrameHeightInMbsMinus1 = h->mb_height - 1;
102	pp->num_ref_frames = sps->ref_frame_count;
103
104	pp->wBitFields = ((h->picture_structure != PICT_FRAME) << 0) |
105	((sps->mb_aff &&
106	(h->picture_structure == PICT_FRAME)) << 1) |
107	(sps->residual_color_transform_flag << 2) |
108	/* sp_for_switch_flag (not implemented by FFmpeg) */
109	(0 << 3) |
110	(sps->chroma_format_idc << 4) |
111	((h->nal_ref_idc != 0) << 6) |
112	(pps->constrained_intra_pred << 7) |
113	(pps->weighted_pred << 8) |
114	(pps->weighted_bipred_idc << 9) |
115	/* MbsConsecutiveFlag */
116	(1 << 11) |
117	(sps->frame_mbs_only_flag << 12) |
118	(pps->transform_8x8_mode << 13) |
119	((sps->level_idc >= 31) << 14) |
120	/* IntraPicFlag (Modified if we detect a non
121	* intra slice in dxva2_h264_decode_slice) */
122	(1 << 15);
123
124	pp->bit_depth_luma_minus8 = sps->bit_depth_luma - 8;
125	pp->bit_depth_chroma_minus8 = sps->bit_depth_chroma - 8;
126	if (DXVA_CONTEXT_WORKAROUND(avctx, ctx) & FF_DXVA2_WORKAROUND_SCALING_LIST_ZIGZAG)
127	pp->Reserved16Bits = 0;
128	else if (DXVA_CONTEXT_WORKAROUND(avctx, ctx) & FF_DXVA2_WORKAROUND_INTEL_CLEARVIDEO)
129	pp->Reserved16Bits = 0x34c;
130	else
131	pp->Reserved16Bits = 3; /* FIXME is there a way to detect the right mode ? */
132	pp->StatusReportFeedbackNumber = 1 + DXVA_CONTEXT_REPORT_ID(avctx, ctx)++;
133	pp->CurrFieldOrderCnt[0] = 0;
134	if ((h->picture_structure & PICT_TOP_FIELD) &&
135	current_picture->field_poc[0] != INT_MAX)
136	pp->CurrFieldOrderCnt[0] = current_picture->field_poc[0];
137	pp->CurrFieldOrderCnt[1] = 0;
138	if ((h->picture_structure & PICT_BOTTOM_FIELD) &&
139	current_picture->field_poc[1] != INT_MAX)
140	pp->CurrFieldOrderCnt[1] = current_picture->field_poc[1];
141	pp->pic_init_qs_minus26 = pps->init_qs - 26;
142	pp->chroma_qp_index_offset = pps->chroma_qp_index_offset[0];
143	pp->second_chroma_qp_index_offset = pps->chroma_qp_index_offset[1];
144	pp->ContinuationFlag = 1;
145	pp->pic_init_qp_minus26 = pps->init_qp - 26;
146	pp->num_ref_idx_l0_active_minus1 = pps->ref_count[0] - 1;
147	pp->num_ref_idx_l1_active_minus1 = pps->ref_count[1] - 1;
148	pp->Reserved8BitsA = 0;
149	pp->frame_num = h->poc.frame_num;
150	pp->log2_max_frame_num_minus4 = sps->log2_max_frame_num - 4;
151	pp->pic_order_cnt_type = sps->poc_type;
152	if (sps->poc_type == 0)
153	pp->log2_max_pic_order_cnt_lsb_minus4 = sps->log2_max_poc_lsb - 4;
154	else if (sps->poc_type == 1)
155	pp->delta_pic_order_always_zero_flag = sps->delta_pic_order_always_zero_flag;
156	pp->direct_8x8_inference_flag = sps->direct_8x8_inference_flag;
157	pp->entropy_coding_mode_flag = pps->cabac;
158	pp->pic_order_present_flag = pps->pic_order_present;
159	pp->num_slice_groups_minus1 = pps->slice_group_count - 1;
160	pp->slice_group_map_type = pps->mb_slice_group_map_type;
161	pp->deblocking_filter_control_present_flag = pps->deblocking_filter_parameters_present;
162	pp->redundant_pic_cnt_present_flag= pps->redundant_pic_cnt_present;
163	pp->Reserved8BitsB = 0;
164	pp->slice_group_change_rate_minus1= 0; /* XXX not implemented by FFmpeg */
165	//pp->SliceGroupMap[810]; /* XXX not implemented by FFmpeg */
166	}
167
168	static void fill_scaling_lists(const AVCodecContext *avctx, AVDXVAContext *ctx, const H264Context *h, DXVA_Qmatrix_H264 *qm)
169	{
170	const PPS *pps = h->ps.pps;
171	unsigned i, j;
172	memset(qm, 0, sizeof(*qm));
173	if (DXVA_CONTEXT_WORKAROUND(avctx, ctx) & FF_DXVA2_WORKAROUND_SCALING_LIST_ZIGZAG) {
174	for (i = 0; i < 6; i++)
175	for (j = 0; j < 16; j++)
176	qm->bScalingLists4x4[i][j] = pps->scaling_matrix4[i][j];
177
178	for (i = 0; i < 64; i++) {
179	qm->bScalingLists8x8[0][i] = pps->scaling_matrix8[0][i];
180	qm->bScalingLists8x8[1][i] = pps->scaling_matrix8[3][i];
181	}
182	} else {
183	for (i = 0; i < 6; i++)
184	for (j = 0; j < 16; j++)
185	qm->bScalingLists4x4[i][j] = pps->scaling_matrix4[i][ff_zigzag_scan[j]];
186
187	for (i = 0; i < 64; i++) {
188	qm->bScalingLists8x8[0][i] = pps->scaling_matrix8[0][ff_zigzag_direct[i]];
189	qm->bScalingLists8x8[1][i] = pps->scaling_matrix8[3][ff_zigzag_direct[i]];
190	}
191	}
192	}
193
194	static int is_slice_short(const AVCodecContext *avctx, AVDXVAContext *ctx)
195	{
196	assert(DXVA_CONTEXT_CFG_BITSTREAM(avctx, ctx) == 1 ||
197	DXVA_CONTEXT_CFG_BITSTREAM(avctx, ctx) == 2);
198	return DXVA_CONTEXT_CFG_BITSTREAM(avctx, ctx) == 2;
199	}
200
201	static void fill_slice_short(DXVA_Slice_H264_Short *slice,
202	unsigned position, unsigned size)
203	{
204	memset(slice, 0, sizeof(*slice));
205	slice->BSNALunitDataLocation = position;
206	slice->SliceBytesInBuffer = size;
207	slice->wBadSliceChopping = 0;
208	}
209
210	static int get_refpic_index(const DXVA_PicParams_H264 *pp, int surface_index)
211	{
212	int i;
213	for (i = 0; i < FF_ARRAY_ELEMS(pp->RefFrameList); i++) {
214	if ((pp->RefFrameList[i].bPicEntry & 0x7f) == surface_index)
215	return i;
216	}
217	return 0x7f;
218	}
219
220	static void fill_slice_long(AVCodecContext *avctx, DXVA_Slice_H264_Long *slice,
221	const DXVA_PicParams_H264 *pp, unsigned position, unsigned size)
222	{
223	const H264Context *h = avctx->priv_data;
224	H264SliceContext *sl = &h->slice_ctx[0];
225	AVDXVAContext *ctx = avctx->hwaccel_context;
226	unsigned list;
227
228	memset(slice, 0, sizeof(*slice));
229	slice->BSNALunitDataLocation = position;
230	slice->SliceBytesInBuffer = size;
231	slice->wBadSliceChopping = 0;
232
233	slice->first_mb_in_slice = (sl->mb_y >> FIELD_OR_MBAFF_PICTURE(h)) * h->mb_width + sl->mb_x;
234	slice->NumMbsForSlice = 0; /* XXX it is set once we have all slices */
235	slice->BitOffsetToSliceData = get_bits_count(&sl->gb) - 8;
236	slice->slice_type = ff_h264_get_slice_type(sl);
237	if (sl->slice_type_fixed)
238	slice->slice_type += 5;
239	slice->luma_log2_weight_denom = sl->pwt.luma_log2_weight_denom;
240	slice->chroma_log2_weight_denom = sl->pwt.chroma_log2_weight_denom;
241	if (sl->list_count > 0)
242	slice->num_ref_idx_l0_active_minus1 = sl->ref_count[0] - 1;
243	if (sl->list_count > 1)
244	slice->num_ref_idx_l1_active_minus1 = sl->ref_count[1] - 1;
245	slice->slice_alpha_c0_offset_div2 = sl->slice_alpha_c0_offset / 2;
246	slice->slice_beta_offset_div2 = sl->slice_beta_offset / 2;
247	slice->Reserved8Bits = 0;
248
249	for (list = 0; list < 2; list++) {
250	unsigned i;
251	for (i = 0; i < FF_ARRAY_ELEMS(slice->RefPicList[list]); i++) {
252	if (list < sl->list_count && i < sl->ref_count[list]) {
253	const H264Picture *r = sl->ref_list[list][i].parent;
254	unsigned plane;
255	unsigned index;
256	if (DXVA_CONTEXT_WORKAROUND(avctx, ctx) & FF_DXVA2_WORKAROUND_INTEL_CLEARVIDEO)
257	index = ff_dxva2_get_surface_index(avctx, ctx, r->f);
258	else
259	index = get_refpic_index(pp, ff_dxva2_get_surface_index(avctx, ctx, r->f));
260	fill_picture_entry(&slice->RefPicList[list][i], index,
261	sl->ref_list[list][i].reference == PICT_BOTTOM_FIELD);
262	for (plane = 0; plane < 3; plane++) {
263	int w, o;
264	if (plane == 0 && sl->pwt.luma_weight_flag[list]) {
265	w = sl->pwt.luma_weight[i][list][0];
266	o = sl->pwt.luma_weight[i][list][1];
267	} else if (plane >= 1 && sl->pwt.chroma_weight_flag[list]) {
268	w = sl->pwt.chroma_weight[i][list][plane-1][0];
269	o = sl->pwt.chroma_weight[i][list][plane-1][1];
270	} else {
271	w = 1 << (plane == 0 ? sl->pwt.luma_log2_weight_denom :
272	sl->pwt.chroma_log2_weight_denom);
273	o = 0;
274	}
275	slice->Weights[list][i][plane][0] = w;
276	slice->Weights[list][i][plane][1] = o;
277	}
278	} else {
279	unsigned plane;
280	slice->RefPicList[list][i].bPicEntry = 0xff;
281	for (plane = 0; plane < 3; plane++) {
282	slice->Weights[list][i][plane][0] = 0;
283	slice->Weights[list][i][plane][1] = 0;
284	}
285	}
286	}
287	}
288	slice->slice_qs_delta = 0; /* XXX not implemented by FFmpeg */
289	slice->slice_qp_delta = sl->qscale - h->ps.pps->init_qp;
290	slice->redundant_pic_cnt = sl->redundant_pic_count;
291	if (sl->slice_type == AV_PICTURE_TYPE_B)
292	slice->direct_spatial_mv_pred_flag = sl->direct_spatial_mv_pred;
293	slice->cabac_init_idc = h->ps.pps->cabac ? sl->cabac_init_idc : 0;
294	if (sl->deblocking_filter < 2)
295	slice->disable_deblocking_filter_idc = 1 - sl->deblocking_filter;
296	else
297	slice->disable_deblocking_filter_idc = sl->deblocking_filter;
298	slice->slice_id = h->current_slice - 1;
299	}
300
301	static int commit_bitstream_and_slice_buffer(AVCodecContext *avctx,
302	DECODER_BUFFER_DESC *bs,
303	DECODER_BUFFER_DESC *sc)
304	{
305	const H264Context *h = avctx->priv_data;
306	const unsigned mb_count = h->mb_width * h->mb_height;
307	AVDXVAContext *ctx = avctx->hwaccel_context;
308	const H264Picture *current_picture = h->cur_pic_ptr;
309	struct dxva2_picture_context *ctx_pic = current_picture->hwaccel_picture_private;
310	DXVA_Slice_H264_Short *slice = NULL;
311	void *dxva_data_ptr = NULL;
312	uint8_t *dxva_data, *current, *end;
313	unsigned dxva_size = 0;
314	void *slice_data;
315	unsigned slice_size;
316	unsigned padding;
317	unsigned i;
318	unsigned type;
319
320	/* Create an annex B bitstream buffer with only slice NAL and finalize slice */
321	#if CONFIG_D3D11VA
322	if (avctx->pix_fmt == AV_PIX_FMT_D3D11VA_VLD) {
323	type = D3D11_VIDEO_DECODER_BUFFER_BITSTREAM;
324	if (FAILED(ID3D11VideoContext_GetDecoderBuffer(D3D11VA_CONTEXT(ctx)->video_context,
325	D3D11VA_CONTEXT(ctx)->decoder,
326	type,
327	&dxva_size, &dxva_data_ptr)))
328	return -1;
329	}
330	#endif
331	#if CONFIG_DXVA2
332	if (avctx->pix_fmt == AV_PIX_FMT_DXVA2_VLD) {
333	type = DXVA2_BitStreamDateBufferType;
334	if (FAILED(IDirectXVideoDecoder_GetBuffer(DXVA2_CONTEXT(ctx)->decoder,
335	type,
336	&dxva_data_ptr, &dxva_size)))
337	return -1;
338	}
339	#endif
340
341	dxva_data = dxva_data_ptr;
342	current = dxva_data;
343	end = dxva_data + dxva_size;
344
345	for (i = 0; i < ctx_pic->slice_count; i++) {
346	static const uint8_t start_code[] = { 0, 0, 1 };
347	static const unsigned start_code_size = sizeof(start_code);
348	unsigned position, size;
349
350	assert(offsetof(DXVA_Slice_H264_Short, BSNALunitDataLocation) ==
351	offsetof(DXVA_Slice_H264_Long, BSNALunitDataLocation));
352	assert(offsetof(DXVA_Slice_H264_Short, SliceBytesInBuffer) ==
353	offsetof(DXVA_Slice_H264_Long, SliceBytesInBuffer));
354
355	if (is_slice_short(avctx, ctx))
356	slice = &ctx_pic->slice_short[i];
357	else
358	slice = (DXVA_Slice_H264_Short*)&ctx_pic->slice_long[i];
359
360	position = slice->BSNALunitDataLocation;
361	size = slice->SliceBytesInBuffer;
362	if (start_code_size + size > end - current) {
363	av_log(avctx, AV_LOG_ERROR, "Failed to build bitstream");
364	break;
365	}
366
367	slice->BSNALunitDataLocation = current - dxva_data;
368	slice->SliceBytesInBuffer = start_code_size + size;
369
370	if (!is_slice_short(avctx, ctx)) {
371	DXVA_Slice_H264_Long *slice_long = (DXVA_Slice_H264_Long*)slice;
372	if (i < ctx_pic->slice_count - 1)
373	slice_long->NumMbsForSlice =
374	slice_long[1].first_mb_in_slice - slice_long[0].first_mb_in_slice;
375	else
376	slice_long->NumMbsForSlice = mb_count - slice_long->first_mb_in_slice;
377	}
378
379	memcpy(current, start_code, start_code_size);
380	current += start_code_size;
381
382	memcpy(current, &ctx_pic->bitstream[position], size);
383	current += size;
384	}
385	padding = FFMIN(128 - ((current - dxva_data) & 127), end - current);
386	if (slice && padding > 0) {
387	memset(current, 0, padding);
388	current += padding;
389
390	slice->SliceBytesInBuffer += padding;
391	}
392	#if CONFIG_D3D11VA
393	if (avctx->pix_fmt == AV_PIX_FMT_D3D11VA_VLD)
394	if (FAILED(ID3D11VideoContext_ReleaseDecoderBuffer(D3D11VA_CONTEXT(ctx)->video_context, D3D11VA_CONTEXT(ctx)->decoder, type)))
395	return -1;
396	#endif
397	#if CONFIG_DXVA2
398	if (avctx->pix_fmt == AV_PIX_FMT_DXVA2_VLD)
399	if (FAILED(IDirectXVideoDecoder_ReleaseBuffer(DXVA2_CONTEXT(ctx)->decoder, type)))
400	return -1;
401	#endif
402	if (i < ctx_pic->slice_count)
403	return -1;
404
405	#if CONFIG_D3D11VA
406	if (avctx->pix_fmt == AV_PIX_FMT_D3D11VA_VLD) {
407	D3D11_VIDEO_DECODER_BUFFER_DESC *dsc11 = bs;
408	memset(dsc11, 0, sizeof(*dsc11));
409	dsc11->BufferType = type;
410	dsc11->DataSize = current - dxva_data;
411	dsc11->NumMBsInBuffer = mb_count;
412
413	type = D3D11_VIDEO_DECODER_BUFFER_SLICE_CONTROL;
414
415	av_assert0((dsc11->DataSize & 127) == 0);
416	}
417	#endif
418	#if CONFIG_DXVA2
419	if (avctx->pix_fmt == AV_PIX_FMT_DXVA2_VLD) {
420	DXVA2_DecodeBufferDesc *dsc2 = bs;
421	memset(dsc2, 0, sizeof(*dsc2));
422	dsc2->CompressedBufferType = type;
423	dsc2->DataSize = current - dxva_data;
424	dsc2->NumMBsInBuffer = mb_count;
425
426	type = DXVA2_SliceControlBufferType;
427
428	av_assert0((dsc2->DataSize & 127) == 0);
429	}
430	#endif
431
432	if (is_slice_short(avctx, ctx)) {
433	slice_data = ctx_pic->slice_short;
434	slice_size = ctx_pic->slice_count * sizeof(*ctx_pic->slice_short);
435	} else {
436	slice_data = ctx_pic->slice_long;
437	slice_size = ctx_pic->slice_count * sizeof(*ctx_pic->slice_long);
438	}
439	return ff_dxva2_commit_buffer(avctx, ctx, sc,
440	type,
441	slice_data, slice_size, mb_count);
442	}
443
444
445	static int dxva2_h264_start_frame(AVCodecContext *avctx,
446	av_unused const uint8_t *buffer,
447	av_unused uint32_t size)
448	{
449	const H264Context *h = avctx->priv_data;
450	AVDXVAContext *ctx = avctx->hwaccel_context;
451	struct dxva2_picture_context *ctx_pic = h->cur_pic_ptr->hwaccel_picture_private;
452
453	if (!DXVA_CONTEXT_VALID(avctx, ctx))
454	return -1;
455	assert(ctx_pic);
456
457	/* Fill up DXVA_PicParams_H264 */
458	fill_picture_parameters(avctx, ctx, h, &ctx_pic->pp);
459
460	/* Fill up DXVA_Qmatrix_H264 */
461	fill_scaling_lists(avctx, ctx, h, &ctx_pic->qm);
462
463	ctx_pic->slice_count = 0;
464	ctx_pic->bitstream_size = 0;
465	ctx_pic->bitstream = NULL;
466	return 0;
467	}
468
469	static int dxva2_h264_decode_slice(AVCodecContext *avctx,
470	const uint8_t *buffer,
471	uint32_t size)
472	{
473	const H264Context *h = avctx->priv_data;
474	const H264SliceContext *sl = &h->slice_ctx[0];
475	AVDXVAContext *ctx = avctx->hwaccel_context;
476	const H264Picture *current_picture = h->cur_pic_ptr;
477	struct dxva2_picture_context *ctx_pic = current_picture->hwaccel_picture_private;
478	unsigned position;
479
480	if (ctx_pic->slice_count >= MAX_SLICES)
481	return -1;
482
483	if (!ctx_pic->bitstream)
484	ctx_pic->bitstream = buffer;
485	ctx_pic->bitstream_size += size;
486
487	position = buffer - ctx_pic->bitstream;
488	if (is_slice_short(avctx, ctx))
489	fill_slice_short(&ctx_pic->slice_short[ctx_pic->slice_count],
490	position, size);
491	else
492	fill_slice_long(avctx, &ctx_pic->slice_long[ctx_pic->slice_count],
493	&ctx_pic->pp, position, size);
494	ctx_pic->slice_count++;
495
496	if (sl->slice_type != AV_PICTURE_TYPE_I && sl->slice_type != AV_PICTURE_TYPE_SI)
497	ctx_pic->pp.wBitFields &= ~(1 << 15); /* Set IntraPicFlag to 0 */
498	return 0;
499	}
500
501	static int dxva2_h264_end_frame(AVCodecContext *avctx)
502	{
503	H264Context *h = avctx->priv_data;
504	H264SliceContext *sl = &h->slice_ctx[0];
505	struct dxva2_picture_context *ctx_pic =
506	h->cur_pic_ptr->hwaccel_picture_private;
507	int ret;
508
509	if (ctx_pic->slice_count <= 0 || ctx_pic->bitstream_size <= 0)
510	return -1;
511	ret = ff_dxva2_common_end_frame(avctx, h->cur_pic_ptr->f,
512	&ctx_pic->pp, sizeof(ctx_pic->pp),
513	&ctx_pic->qm, sizeof(ctx_pic->qm),
514	commit_bitstream_and_slice_buffer);
515	if (!ret)
516	ff_h264_draw_horiz_band(h, sl, 0, h->avctx->height);
517	return ret;
518	}
519
520	#if CONFIG_H264_DXVA2_HWACCEL
521	AVHWAccel ff_h264_dxva2_hwaccel = {
522	.name = "h264_dxva2",
523	.type = AVMEDIA_TYPE_VIDEO,
524	.id = AV_CODEC_ID_H264,
525	.pix_fmt = AV_PIX_FMT_DXVA2_VLD,
526	.start_frame = dxva2_h264_start_frame,
527	.decode_slice = dxva2_h264_decode_slice,
528	.end_frame = dxva2_h264_end_frame,
529	.frame_priv_data_size = sizeof(struct dxva2_picture_context),
530	};
531	#endif
532
533	#if CONFIG_H264_D3D11VA_HWACCEL
534	AVHWAccel ff_h264_d3d11va_hwaccel = {
535	.name = "h264_d3d11va",
536	.type = AVMEDIA_TYPE_VIDEO,
537	.id = AV_CODEC_ID_H264,
538	.pix_fmt = AV_PIX_FMT_D3D11VA_VLD,
539	.start_frame = dxva2_h264_start_frame,
540	.decode_slice = dxva2_h264_decode_slice,
541	.end_frame = dxva2_h264_end_frame,
542	.frame_priv_data_size = sizeof(struct dxva2_picture_context),
543	};
544	#endif
545